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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
   

Fair Value

Hierarchy

Level

 

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Fair Value

 

Cash equivalents:

             

                 
Money market funds invested in U.S. government obligations   Level 1   $ 4,792,338     $ -     $ -     $ 4,792,338  
Total       $ 4,792,338     $ -     $ -     $ 4,792,338